I see great things in Octave and am encouraging students in my differential equations class to become familiar with it as an alternative to MATLAB. To that end I have been looking into Octave installation on all of the major platforms. Typically I use Octave on Linux and on Windows with no problems.
For Mac OSX I chose to get Octave from Macports. The installation, albeit lengthy, goes smoothly enough, but for every variant of Octave I have tried (octave and octave-devel-release) I am unable to install packages from Octave Forge. For example:
>> pkg install -forge dataframe
error: urlwrite: unable to open file
error: called from
pkg at line 395 column 23